公开(公告)号：EP2444413A1

公开(公告)日：2012-04-25

申请号：EP12150998.8

申请日：2007-08-04

申请人： Verenium Corporation

发明人： Steer, Brian ,  Healey, Shaun ,  Esteghlalian, Alireza ,  Miles, Stacy Marie ,  Barrett, Kenneth ,  Quadt, Rene

IPC分类号： C07K14/00 ,  C07K17/00 ,  C12N9/24

CPC分类号： C12N9/2437 ,  A23K20/147 ,  A23L33/18 ,  C09K8/035 ,  C09K8/52 ,  C09K8/68 ,  C09K8/74 ,  C09K8/805 ,  C09K8/90 ,  C09K2208/24 ,  C12N9/2405 ,  C12P19/02 ,  C12P19/14 ,  C12Y302/01004 ,  C12Y302/01006 ,  C12Y302/01008 ,  C12Y302/01039 ,  E21B43/26 ,  G06F19/22 ,  Y02E50/17

摘要： A drilling or oil and gas well clean up and/or fracturing method comprises providing at least one polymer-degrading enzyme comprising a polypeptide of SEQ ID NO:15, which is added to a drilling fluid used during an oil and gas well drilling operation, or to a fluid used for an oil and gas well clean up and/or fracturing operation. Combined with a second enzyme comprising a polypeptide of SEQ ID NO: 2, the enzyme comprising a polypeptide of SEQ ID NO 15 can be used to degrade a xanthan, a guar, a hydroxyalkyl guar, a carboxyalkyl guar, a guar gum, a guar gum powder, a lignified coat of guar seeds or a solidified guar gum.

摘要翻译： 钻井或油气净化和/或压裂方法包括提供至少一种包含SEQ ID NO：15的多肽的聚合物降解酶，其被添加到在油气井钻井操作期间使用的钻井液中， 或用于油气清洁和/或压裂操作的流体。 与包含SEQ ID NO：2的多肽的第二种酶组合，包含SEQ ID NO 15的多肽的酶可用于降解黄原胶，瓜尔胶，羟烷基瓜尔胶，羧烷基瓜尔胶，瓜尔胶，瓜尔胶 胶粉，木瓜化的瓜尔胶种皮或固化的瓜尔胶。